Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20170210' into staging

target-arm queue:
 * aspeed: minor fixes
 * virt: declare fwcfg and virtio-mmio as DMA coherent in DT & ACPI
 * arm: enable basic TCG emulation of PMU for AArch64

# gpg: Signature made Fri 10 Feb 2017 18:06:30 GMT
# gpg:                using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20170210:
  aspeed/smc: use a modulo to check segment limits
  aspeed/smc: handle dummies only in fast read mode
  aspeed: remove useless comment on controller segment size
  aspeed: check for negative values returned by blk_getlength()
  hw/arm/virt: Declare fwcfg as dma cache coherent in dt
  hw/arm/virt: Declare fwcfg as dma cache coherent in ACPI
  hw/arm/virt: Declare virtio-mmio as dma cache coherent in ACPI
  target-arm: Declare virtio-mmio as dma-coherent in dt
  target-arm: Enable vPMU support under TCG mode
  target-arm: Add support for PMU register PMINTENSET_EL1
  target-arm: Add support for AArch64 PMU register PMXEVTYPER_EL0
  target-arm: Add support for PMU register PMSELR_EL0

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>